Description:Key Locking Thread Inserts are an ideal solution to repair stripped, damaged and worn threads or to provide thread reinforcement in a weaker parent material, especially when the mating stud or bolt will be removed frequently. They provide strong, permanent threads in virtually any material - ferrous, non-ferrous, or non-metallic. The insert's locking keys are driven down into the tapped threads of the parent material during installation creating a positive mechanical lock that prevents rotation due to vibration or torsion.

In addition to the external locking keys, internal locking inserts have a swaged in groove to produce an internal thread lock eliminating the need for other thread locking devices. Inserts with this feature are designed to securely lock a bolt within only a few turns.The increased wall thickness and greater external thread area of these Extra Heavy Duty Threaded Inserts offer superior pull-out strength, stability, and longer life. These inserts should be used in materials with lower ultimate shear strength to obtain maximum pull-out strength and holding power.Features:

Only Standard Drill and Tap required.

Can be used in most materials...aluminum, magnesium, cast iron, carbon steel, stainless steel and plastic.

Simple installation compared to helical wire inserts.

Nearly impossible for the insert to turn after installation.

Nearly impossible to cross thread while installing.

Adhesive not required to hold insert in place.

Rarely affected by hot or cold temperatures because it is held in place mechanically.

Easy to remove.

Cross Reference:

Key Locking Thread Insert: 9/16-18 ID, 7/8-14 OD, 303 SST, Locking

Chrislynn P/N: 77539

Keensert P/N: KNHXHL918J

Mil-Spec P/N: MS51832-207L

If you are currently using Keensert, Military Specification, or National Aerospace Standard part numbers for your inserts, please see our Cross Reference list above for an easy and accurate transition to our Rock Solid line of Key Locking Inserts from Chrislynn. Step up to quality and value with this Made in the USA product!